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Thermal analysis of ethylene–propylene copolymer‐ grafted ‐glycidyl methacrylate
Author(s) -
Zhang Xiaomin,
Li Lixia,
Yin Zhihui,
Qi Yuchen,
Yin Jinghua
Publication year - 1996
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19961212)62:11<1933::aid-app18>3.0.co;2-z
Subject(s) - differential scanning calorimetry , copolymer , glycidyl methacrylate , materials science , crystallization , polymer chemistry , monomer , nucleation , ethylene propylene rubber , chemical engineering , enthalpy , composite material , chemistry , polymer , thermodynamics , organic chemistry , physics , engineering
The thermal properties of ethylene–propylene copolymer grafted with glycidyl methacrylate (EP‐ g ‐GMA) were investigated by using differential scanning calorimetry (DSC). Compared to the plain ethylene–propylene copolymer (EP), peak values of melting temperature ( T m ) of the propylene sequences in the grafted EP changed a little, crystallization temperature ( T c ) increased about 8–12°C, and melting enthalpy (Δ H m ) increased about 4–6 J/g. The isothermal and nonisothermal crystallization kinetics of grafted and ungrafted samples was carried out by DSC. Within the scope of the researched crystallization temperature, the Avrami exponent ( n ) of ungrafted sample is 1.6–1.8, and those of grafted samples are all above 2. The crystallization rates of propylene sequence in EP‐ g ‐GMA were faster than that in the plain EP and increased with increasing of grafted monomer content. It might be attributed to the results of rapid nucleation rate. © 1996 John Wiley & Sons, Inc.